Shoe-filling machine.



F. E. BERTRAND.

SHOE FILLING MACHlNE.

APPLICATION FILED MAY21.1915.

1 Patented Apr. 8,1919,

3 SHEETSQ-SHEET 1.

F. E. BERTRAND.

SHOE FILLING MACHINE.

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SHOE FILLING MACHINE.

APPLIYCATION FILED 'MAY 21. 1915.

Patented Apr. 8, 1919. 3 SHEETSSHEET3 FREDERIC E. BERTRAN'D, 0F LYNN,MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN MENTS, TO UNITED SHOE MACHINERYCORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

SHOE-FILLING MACHINE.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed May 21, 1915. Serial No. 29,594.

T 0 all whom it may concern Be it known that I, Fnnnnnro E. BERTRAND, acitizen of the United States, residing at Lynn, in the county of Essexand State of Massachusetts, have invented certain Improvements inShoe-Filling Machines, of which the following description, in connectionwith the accompanying drawings, is a specification, like referencecharacters on the drawings indicating like parts in the several figures.

This invention relates to machines for filling shoes and is hereinillustrated in connec tion with a machine for applying to a shoe aheated filling material.

The filling material commonly used consists of a comminuted solid suchas cork held together by a sticky binder, the whole mass when cold beingsolid but taking on when properly heated and mixed a viscous characterto the extent that it may be forced through a comparatively small openinand pressed into a cavity of any shape to which it is applied. It iscustomary to fill the cavity in the bottom of a shoe, bounded by theinseam from the toe up to or including the shank, with such a materialpreparatory to laying and attaching the outer sole. Hitherto, because ofthe sluggish nature of the filling material, it has been difficult toforce it properly in a continuous stream from the receptacle into thecavity.

* One feature of the present invention comprises, in a machine of theclass described having a receptacle fo filling material and an outletthrough which the' material is forced to the bottom of the shoe, apressure chamber in which a comparatively small amount or charge of thematerial is sub jected to considerable pressure during the time that theoutlet is open. By thus segregating a small portion of the material andconcentrating the pressure upon it a much more satisfactory delivery maybe made.

This and other features of the invention including certain details ofconstruction and combinations of parts will bedescribed in connectionwith an illustrative machine and pointed out in the appended claims.

Referring to the accompanying drawings,- I

Figure 1 is a front view, partly in section, of a machine in which thepresent invention is embodied;

Fig. 2 is a section on the line 22 of Fig. 1;

Fig. 3 is a plan view with certain parts in section and others brokenaway.

Before going into a detail description of the machine its general modeof operation will be outlined. The filling material in the form ofbricks or chunks is placed in a preliminary heating chamber where it issomewhat softened' by heat and broken up or comminuted by revolvingshredders. From this chamber it falls into the main receptacle where itis further softenedv or melted and thoroughly mixed and stirred so as tomaintain it in proper condition to be delivered to a shoe. Communicatingwith the lower part of the main receptacle is a small compartment whichis intermittently separated from the main compartment by a valve whichcloses the communlcation. The material in this compartment is compressedby a plunger prior to the opening of. a valve which permits thecompressed material to flow upon a shoe presented in proper position tothe machine.

The preliminary heating chamber 1, the melting chamber 3, and theassociated parts are mounted on a pedestal 5 so as to permit convenientpresentation of a shoe to the machine. A shaft 7, rotatably mounted inthe lower part of the heating chamber 1, is connected by gears 9 withshafts 11 upon which are mounted shredders 10. A steam jacket 13surrounds the lower part of the chamber 1 and serves to soften thefilling material while said material is being broken up by the action ofthe shredders. The main receptacle 3 into which the partially softenedand broken material drops, has formed in its sides and bottom a secondsteam jacket 15 and is provided with a mixer or stirrer 17 the contourof the outside edge of the arms of which, as shown in Fig. 1,corresponds to the contour of the lower part of the receptacle. Thestirrer 17 is fast to short shafts 19; and a chain 21 connects asprocket wheel 23 loose on the end of one of said shafts with a sprocketwheel 25 on the end of the shaft 7 The other short shaft 19 is connectedby a friction drive with a pulley 26 to which power may be applied bymeans of a belt, the purpose of the friction drive being to preventbreakage of parts which might occur under certain circumstances when thestirrer is started. A clutch member 27 which is keyed to but slidable onthe right hand shaft 19 may be moved when desired by a handle 29 toconnect the sprocket wheel 23 with said shaft. With. this con structionthe stirrer 17 may be rotated continuously and the shredding mechanism,operated by the shaft 7 may be thrown into or out of action as desired.

The bottom of the receptacle 8 opens into an inclined pressure chamber31 rectangular in cross-section in which a plunger 33: is sl-idable, andabove the plunger a valve 35 is slidable in ways in the walls ofthepressure chamber. Communicating with. the lower endof the pressurechamber 3']: isan oscil liatory' delivery valve 37 held in acylindricalvalve casing 39'having a long narrow opening 451'- inits undersideWlllCh is normally closed by two. gate valves 43. The oscillatory valvev37 has a largereceiving opening e5 which is always in communication withthe pressure chamber 31, and! a smaller delivery'opening 47' which isnormall out of register with the opening 41 in the' casing 39. but ismoved into reglster with said: opening whenever a shoe is. to. befilled.

The. various movements of: the slide valve 35,-the: plunger 33 andtheoscillatory valve 37 take place when the operator depresses a treadle,not show/n The: slidevalve 35 has a boss at its=upper end to which' oneend ofia link- 19% ispivotedythe otherend of the link being pivoted toan arm 51 the hub: of whicl'i is: loose upon a shaft 53 ,.said1 hubhaving extending outwardly from it a' second arm 55 whichhas a pin'andrslot connection with a rod 57: so that when said rodi is lowered and.raised the valve 35 is closed? and opened. The plunger is connected bylinks 61 with arms 59 the hubs of which are'fast to the shaft 53: Thehub oli an arm 68- is also fast to said shaft, the outer end of saidarmhavnig a p-ln and-slot connection with an. operating nod 65.. Theoscilli'atory valve- 37 is provided: with: depending tails to which arepivoted one end of links 67 the other end of saidli nksbeing-pivoted toarms fast to a rock-shaft 68" towhich. is also fast. an arm: 69 having apin -and slot: con-- nection with an: operating: rod 71. Therods 57, 65and 7&1 may be reciprocated in: any suitable 1112131 116? as, forexample, by: rolls which run in properly shaped cam tracks, the wholemechanism being controlled by any suitable form of one-revolutionclutch. Since mechanism] of this sort is well known no Specificmechanism has been: shown. It will be understood, however, that the ma:chine: comes to! rest with, the parts in! the position shown, and. that,when: the operator depresses: the treadle to: throw in theonerevolution: clutch therode 5.7, 65 and 71 are reciprocated' inproperly timed relation. It

will be noted that the rod 65 is held down by, a rod 73 through a spring75, the purpose of the spring being to apply a yielding pressure to thel'unger 33. When the onerevolution clutci referred to above has beenthrown in, the valve 35 is first moved to shut off the pressure chamber81 from the main receptacle 3, the plunger 38 is then moved downwardlyto apply pressure to the filling material in the chamber 31, and thenthe valve 37 is oscillated to bring the open ing- 47 into register withthe opening at in the valve casing 39-. It will therefore be evidentthat if the gate valvesel are now open a ribbonlike mass of fillingmaterial will: be forced out, the width of said ribbonlike massdepending upon the distance apart of the adjacent ends of the gatevalves 43.

These gate: valvesv are normally held in position by a spring andarearranged' to be opened by the presentation of a shoeinlpositiorr to.-be: filled, the extent to which they are opened varying in: accordancewith the width of the shoe: in the manner which will now be described.The valve casing 39% is held fast in a cylindrical socket in adependingportion- QOili the receptacle: 3, said portion having a curvedextension in which is formed a' slideway for the valves 13 which are:similarly eurved-.. -Each valve tSf is provided with a socket torece-ive' a pin 7% carried by an arm: 79 and pivoted! to the arms at'8'1are other arms 83 upon the ends of which are rotatably mountedcontacting members 85 the fornr ot rollers. Each arm 834 has a dependintail! adapted to be engagedby ,a-setscrew s t by which the position ofthe: roller Somay be adjusted.- The arms 79" are integral with hubs: 89-each of which is provided with a second arm 91 having formed on: its enda/ segmental gear 93'. These gears intermesh so that when one of therollers 85! is moved in a. given direction the other roller will bemoved equally in an opposite directioni spring 97 connects thevtwoarms-7 9 thereby holding the rollers 85,- in: the position shownwith. the gatie valves in closed position. In. order to permit the rolls85 to: be separated if desired just prior to-thepresentation of". a-shoeto the machine a chain 99 connected with. a suitable treadle (notshown);passes over arol'ler 101 and is fastened to one of the ar1 ns.9 1..-

In! the operation of the machine steam or any suitable heating; fluid isadmitted: to the jackets 13, 15,, power isapplied to the" pulley 26 andthe: clutch 27 thrown in. The preliminaryheating chamber 1 is" thenpartially filled withlthe': cold filling material. In this chamberthezmateria'l iasomewhat' softened by the heat and broken up by theshredders 1-0- on the shafts 7 and 1 1. The partially heated! and:broken filling mate-rial drops into the main receptacle 3 whereit is;further heated and in addition acted upon by the stirrer 17 to Work itup into the proper consistency for being applied to a shoe. When asufiicient amount of filling material has accumulated in the receptacle3 the operator presents a shoe between the rolls 85, throws in theone-revolution clutch, which has been referred to above, and moves theshoe along beneath the outlet 41. As the clutch is thrown in thematerial in the pressure chamber 31 is subjected to pressure, and thedelivery opening 47 in the valve 37 brought into register with theopening 41. The cams which operate these elements are so arranged thatthe valve 85 remains closed, the opening 47 in register with the opening41 and the plunger in position to apply pressure to the material for atime sufficient to permit the shoe to be filled. As the rolls 85, whichrun in the rand crease of the shoe, are forced apart more or less by themovement imparted to the shoe by the operator, a ribbon of fillingmaterial is delivered upon the bottom of the shoe. In practice it ispossible either to push the shoe toe foremost until the rollers 85 reachthe shank of the shoe and then to release the shoe by the chain 99 or toopen the rollers slightly by means of the chain 99 and start the fillingoperation at or near the shank of the shoe. in the second case theoperator pulls the shoe toward him instead of pushing it away from himas in the first case. As the filled portion of the shoe passes therollers 85 the operator may tilt it slightly to cause it to drag overthe lower surface of the valve casing 39 so as to smooth the fillingmaterial and press it into place.

The purpose of the curve of the extensions 30 and the valves 43 is toprovide for the usual transverse curvature of the bottom of the shoe andto cause the filling material to be slightly crowned.

Although the invention has been set forth in connection with aparticular machine, it should be understood that the invention is notlimited in the scope of its application to the particular machine shownand described.

Having thus described my invention, I claim as new and desire to secureby Letters Patent of the United States:

1. A shoe filling machine. having in combination, a receptacle forfilling material, a pressure chamber having an inlet from saidreceptacle andan outlet. a valve controlling said inlet, a second valvecontrolling said outlet, means for closing the inlet valve, means forapplying pressure to the material in said chamber while said inlet valveis closed, and means operated by presentation of a shoe in operativerelation to said outlet for opening said outlet valve.

2. A shoe filling machine, having in combination, a receptacle forfilling material, a pressure chamber having an inlet from saidreceptacle and an outlet, a valve controlling said inlet, a second valvecontrolling said outlet, means for closing the inlet valve, means forapplying pressure yieldingly to th material in said chamber while saidinlet valve is closed, and means operated by presentation of a shoe inoperative relation to said outlet for opening said outlet valve.

3. A shoe filling machine, having in combination, a receptacle forfilling material, a pressure chamber having a normally open inlet fromsaid receptacle and a normally .closed outlet, power operated means forclosing said inlet and compressing the material in said chamber, andmeans operated upon presentation of a shoe in position to be filled foropening said outlet.

4. A shoe filling machine, having in combination, a receptacle forfilling material, a pressure chamber having a normally open inlet fromsaid receptacle and a normally closed elongated outlet, a valve forcontrolling said inlet, a pair of gate valves for controlling saidoutlet, power operated means for closing said inlet valve andcompressing the material in the pressure chamber, and means operated bypresentation of a shoe in position to be filled for opening said gatevalves.

5. A shoe filling machine, having in combination, a receptacle forfilling material. a pressure chamber in communication with saidreceptacle, a valve casing opening at one point into said chamber andbeing provided at another point with an outlet. a valve in said casinghaving communication at all times with said chamber to receive fillingmaterial therefrom, said valve being provided with a delivery opening,means for applying pressure to the material in said pressure chamber,means for moving said valve to cause its delivery opening to registerwith said outlet, and means operated upon presentation of a shoe foropening said outlet.

6. A machine of the class described having, in combination, a receptaclefor filling material, a pressure chamber in communication with saidreceptacle, a valve casing opening at one point into said chamber andbeing provided at another point with an outlet, a valve in said casinghaving communication at all times with said chamber to receive fillingmaterial therefrom, said valve being provided with a delivery opening,means for applying pressure to the material in said pressure chamber,means for moving said valve to cause its delivery opening to registerwith said outlet, and means for opening and closing said outlet.

7. A machine of the class described having, in combination, a receptaclefor filling material, there being an outlet from said receptacle, theportion of the machine through which said outlet opens having a faceagainst which the bottom of the shoe is pressed during the fillingoperation ofthe curvature' desired to beimparted to the bottom oi thefilled shoe, and means for forcing V filling material through saidoutlet.

8. A machine of the class described having, in combination, a receptaclefor filling material, there being an outlet from said receptacle, theportion of the machinethrough which said outlet opens having. a faceagainst which the bottom of the shoe is pressed during the fillingoperation of the curvature desired to be imparted to the bottom of thefilled shoe, and means constructed and' arranged to be operated When'theshoe is moved along in contact with said face for causing fillingmaterial to be delivered to the bottom of said shoe;

9. A machine of the class described having, in combination, a chamber inwhich the filling material is heated and disintegrated, a receptacle inwhich the filling material is melted and stirred, rotary shafts mountedrespectively in the walls of said chambers, means for applying power toone shaft to rotate it, and means for connecting the other shaft withthe power shaft and for disconnecting it therefrom. I I

10; A shoe filling machine having, in combination, a receptacle forfilling material, a pressure chamber having an inletfrom said receptacleand an outlet a normally open inlet valve, a normally closedoutletvalve, means for closing the inlet valve and compressing the material inthe chamber, and means-operated upon presentation ofa shoe in positionto be filled for opening the outlet valve H g v 11. A- 'shoe fillingmachine, having, in combination, a receptacle for filling material, apressure chamber having an inlet from said receptacle and an outlet, avalve controllingsaid inlet, a second valve controlling said outlet,means for closing the inlet valve, yieldingly operated reciprocatingmeans for applying pressure to the material in said chamber while saidinlet valve is closed, and means for opening said outlet valve.

Intestimony whereoif I have signed my name to this specification;

FREDERIG E. BERTRAND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of lat'ents.

Washington, D. G.

